I am trying to remember that I didnt invest a lot. But as long as you are holding it, regardless of its dump, you are still not losing any of its value. However, if in case you already sold it at a cheaper price and there was an unexpected rise, then take it as a lesson. I guess it is best to know how to analyze charts so you'd be able to predict what will happen next. Technical analysis is indeed an advantage when it comes to trading.